I read this answer: how to sharp/blur an uiimage in iphone?
As well as dozens and dozens of other answers and tutorials on shadows and blur. It does not work, including all of the source links in the answers.
What I get any time I attempt to blur an image from a png file which has transparent areas. Is an image that is (when not using the source pasted in the above answers) a blurry image where all of the transparent areas are filled with noise.
After trying every piece of sample code I've found for the past 5 days with no luck what soever I have around 50 hours in to this and have accomplished less than I had before I started. So I am wondering, how can you add gaussianblur to a UIImage that has transparent pixels?
Better yet… I am attempting to take a UIImage, sometimes created from a UILabel, and add a shadow to it that can be tilted to appear like it falls on the ground behind and beneath the image like a shadow cast by the sun on the ground. It was suggested that I should take the image, convert it to grayscale and blur it out then apply the transform… Great idea, except that, as stated above, because all of these images have a great deal of transparent pixels I end up with a stark square of almost nothing but noise.
I should note, core graphics are a really weak point for me, so I could look at the example code all day and never understand it enough to tweak it to work.
